All wet

Pro Tip 1/3

Used in informal situations, often to express disagreement or skepticism about someone's opinion.

I think he's the best player on the team, but my brother says I'm all wet.

Pro Tip 2/3

Doesn't relate to actual water. It means someone's beliefs or statements are incorrect or unfounded.

If you think that's the correct answer, you're all wet.

Pro Tip 3/3

Often used among friends or peers. Might be impolite if used with someone you're not familiar with.

During the debate, he told his opponent that her facts were all wet.